You've managed to dodge the bullet of obsolete storage media. All your data from floppy disks (or whatever) is now safely on USB flash drives, terabyte backup drives, or in the cloud. But another pitfall awaits if and when you ever try to open those old files. What if a file's data format is so ancient that you no longer have any applications that can read the format? I recently tripped over two examples of this dilemma. Here's how I solved them: